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Magstar 3590 read write problem

Discussion in 'Hardware' started by Parth, Oct 7, 2003.

  1. Parth

    Parth Guest

    hi

    I have a problem to reading /writing /erasing tape in IBM 3590 ACF
    tape drive.

    This tape drive is connected with Node N1 of SP3 system (rmt0). There
    is another tape
    drive connected with Node N3 (rmt2). Both are IBM Magstar 3590 tape
    drive with ACF (10 slots)

    when ever i tried to read or write a tape on rmt0 it gives a tape
    error near the end of tape
    .. I have replaced the cartridge but no reasult. Both cartridge are
    readable /writable on
    another tape drive (rmt2). I have cleaned the tape drive several
    times.

    O.S is AIX 4.3.3
    Any suggestions ?
     
    Parth, Oct 7, 2003
    #1
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  2. Parth

    RobH Guest

    Log a HW call with IBM, send them the errpt output and get your local
    IBM CE to health check the drive.
    Other than that there isn't a whole lot else you can do 'cos 3590s
    aren't customer maintainable.
     
    RobH, Oct 7, 2003
    #2
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  3. Parth

    Parth Guest

    Dear Robh
    thanks for response. actually we maintained 3590 and this place
    (assam-india) is quite remote place and very difficult to obtain
    suport from IBM. It may takes weeks to get.
    Any way, in my last post i didn't mention the problem in details, here
    is the details problem. Hope some one can give a suggestion like head
    alignment.

    Actually with SP3, two identical IBM Magstar 3590 connected (one is
    rmt0 connected with Node1 and other is rmt 2 connected with Node3)
    When ever I try to read or write any tape from rmt0 its working fine
    up to almost end of the tape. Near the end of the tape, the drive
    trying to locate the data, to locating it rewinds whole tape to
    cartridge and then re-reads again. After two to three times it gave
    up indicating tape error.
    I have checked the media and change the cartridge. The same cartridge
    is readable or writable by other tape drive (rmt2-connected with
    Node3).
    I have also checked the configuration of tape (block size, hardware
    compression etc) in both nodes and found ok

    It seems to me, that, near the end of the tape there is a tape motion
    fault or its linear speed may be changing, but I am not sure.




    Here is the details of error log generated by ?errpt ?a?
    ---------------------------------------------------------------------------

    LABEL: TAPE_ERR4
    IDENTIFIER: 5537AC5F

    Date/Time: Tue Oct 7 15:04:54
    Sequence Number: 16177
    Machine Id: 000505204C00
    Node Id: sp1jor_s
    Class: H
    Type: PERM
    Resource Name: rmt0
    Resource Class: tape
    Resource Type: 3590
    Location: 20-58-00-4,0
    VPD:
    Manufacturer................IBM
    Machine Type and Model......03590B11
    Serial Number...............0000000B2538
    Device Specific.(FW)........B833
    Loadable Microcode Level....A0B00E25

    Description
    TAPE DRIVE FAILURE

    Probable Causes
    ADAPTER
    TAPE DRIVE

    Failure Causes
    ADAPTER
    TAPE DRIVE

    Recommended Actions
    PERFORM PROBLEM DETERMINATION PROCEDURES

    Detail Data
    SENSE DATA
    0604 0000 1600 0000 0000 0000 0000 0000 0200 0400 0000 0000 0000 0000
    0000 0000
    0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
    0000 0000
    0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
    0000 0000
    0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
    0000 0000
    0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
     
    Parth, Oct 15, 2003
    #3
  4. Parth

    RobH Guest

    In my last job I looked after a number of 3494 tape libraries with about
    ten 3590 tape drives and didn't find them consistant or particularly
    reliable. I used to get my local IBM CE in to check the drives almost
    every time hardware errors were reported and he was constantly
    "tweaking" and adjusting the drives, upgrading the microcode, adjusting
    the pneumatics, extracting stuck tapes etc. I wonder if I was just
    "unlucky".

    Having seen a 3590 disassembled on many occasions you really need
    someone who knows what they are doing. If you maintain your drives
    yourself but are having problems then you have little option but to go
    to IBM.
    If you have no option going to IBM then you could follow the problem
    determination in the 3590 service guide (you should have received one
    with each drive you purchased) but this may end up suggesting a
    non-trivial action which requires some specialist tools (some of which
    come with the drive).

    In either case you may have to pay IBM big bucks to bail you out.
     
    RobH, Oct 19, 2003
    #4
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